Pro-apoptotic activity of lipidic α-amino acids isolated from Protopalythoa variabilis
作者:Diego Veras Wilke、Paula Christine Jimenez、Renata Mendonça Araújo、Wildson Max Barbosa da Silva、Otília Deusdênia Loiola Pessoa、Edilberto Rocha Silveira、Claudia Pessoa、Manoel Odorico de Moraes、Mariusz Skwarczynski、Pavla Simerska、Istvan Toth、Letícia Veras Costa-Lotufo
DOI:10.1016/j.bmc.2010.09.027
日期:2010.11
Lipidic alpha-amino acids (LAAs) have been described as non-natural amino acids with long saturated or unsaturated aliphatic chains. In the continuing prospect to discover anticancer agents from marine sources, we have obtained a mixture of two cytotoxic LAAs (1a and 1b) from the zoanthid Protopalythoa variabilis. The anti-proliferative potential of 14 synthetic LAAs and 1a/1b were evaluated on four tumor cell lines (HCT-8, SF-295, MDA-MB-435, and HL-60). Five of the synthetic LAAs showed high percentage of tumor cell inhibition, while 1a/1b completely inhibited tumor cell growth. Additionally, apoptotic effects of 1a/1b were studied on HL-60 cell line. 1a/1b-treated cells showed apoptosis morphology, loss of mitochondrial potential, and DNA fragmentation. (C) 2010 Elsevier Ltd. All rights reserved.
Corrigendum to “Pro-apoptotic activity of lipidic α-amino acids isolated from Protopalythoa variabilis” [Bioorg. Med. Chem. 18 (2010) 7997–8004]
作者:Diego Veras Wilke、Paula Christine Jimenez、Renata Mendonça Araújo、Wildson Max Barbosa da Silva、Otília Deusdênia Loiola Pessoa、Edilberto Rocha Silveira、Claudia Pessoa、Manoel Odorico de Moraes、Mariusz Skwarczynski、Pavla Simerska、Istvan Toth、Letícia Veras Costa-Lotufo
DOI:10.1016/j.bmc.2010.12.041
日期:2011.2
New GM1 Ganglioside Derivatives for Selective Single and Double Labelling of the Natural Glycosphingolipid Skeleton
作者:Svetlana M. Polyakova、Vladimir N. Belov、Sergey F. Yan、Christian Eggeling、Christian Ringemann、Günter Schwarzmann、Armin de Meijere、Stefan W. Hell
DOI:10.1002/ejoc.200900645
日期:2009.10
Selectivesingle and doublelabelling of the naturalgangliosideGM1 enables one to introduce various markers into different parts of the glycosphingolipid molecule without changing the naturalskeleton. To that end, N-Fmoc-2amino-, N-Fmoc-18-amino- and S-(ethoxythiocarbonyl)-18mercaptostearic acids have been prepared and coupled with the primary amino group in the sphingosine part of lyso-GM1 and